VHDL Component Declaration
The following VHDL component declaration is located in the VHDL Design File (.vhd) Definition ALTERA_PRIMITIVES_COMPONENTS.VHD located in the <Quartus® Prime installation directory>\libraries\vhdl\altera directory.
component tri port( a_in : in std_logic; oe : in std_logic; a_out : out std_logic); end component;